Electric calculating machine



Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHI NE Filed July 21, 1938 92 Sheets-Sheet l Jnnentor Rolf Hofgaard His Gttomeg Nov. 11, 1941. R. HOFGAARD 2,262,235

ELECTRIC CALCULATING MACHINE Filed July 21, 193B 92 Sheets-Sheet 2 gllillllllll ii l-l-lllel l'I-I-I:

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NOV- 11, 1941. R HQFGAARD 2,262,235

ELEC'IZRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 3 Rolf Hofgaard Hi5 ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 4 INVENTOR Rolf HoIgaard Hts ATTORN EY Filed July 21, 1938 92 Sheets-Sheet 5 INVENTOR Rolf Hofgaard 'ZM .M

His ATTORNEY Nov. 11, 1941. R. HOFGAARD 2,252,235

ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 6 FIG.1O

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r x 5/ l n IlkWA/A A HAAAA/A MI//////// I A l INVENTOR Roll Hofgaard Hi ATTORNEY NOV- 11, 1941. R, HQFGAARD 2,262,235

ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 SheetsF-Sheet 7 FIG.14

FIG. 13 F B O O C J EP EHB G I I ED J I E E EP 0 C FF D . J o J 1m DD DD F F FIG. 15

INVENTOR Rolf Hnfgaard By M v His ATTORNEY Nov. 11; 1941. HOFGMRD 2,262,235

ELECTRIC CALCULATING MACHINE Filed July 21, 1958 92 Sheets-Sheet 8 7////////////////////////////////////////////A u x\\\\\\\\\\\\\\\\\\\-\\\\\\\\\\\\\\ .INVENTOR Rolf Holgaard Hi8 ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHI NE Filed July 21, 1938 92 Sheets-Sheet 9 LK'l To LKO.

INVENTOR Roll Hofgaard By His ATTORNEY Nov. 11, 1941.

50. FIG. 23

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F EH- EN I B B c R. HOFGAARD 2,262,235

ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet l0 3nventor B Rolf Hofgaard His Cittorneg NOV. 11, 1941. R HQFGAARD 2,262,235

ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 11 FIG.27

INVENTOR Rolf Hnfgaard His ATTORN EY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 12 I H {1/10 K G l HUI. I F h 0 ll 1 \J u 1 WWW mp m R w v M K F 2 K IIHIIIIIPI w M N M K K K x Y K K LKP INVENTOR Rolf Hol'gaard His ATTORNEY 92 Sheets-Sheet 15 INVENTOR Rolf Hnfgnard ga/vg/ His ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHI NE Filed July 21, 1938 Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet l4 o vm INVENTOR HIS ATTO RN EY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 15 INVENTOR Rolf Hofgaard y His ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 16 mm UE INVENTOR Rolf Hofgaard His ATTORNEY 1941- R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1958 92 Sheets-Sheet 1'7 INVENTOR B, Rolf Hol'gaard His ATTORNEY Nov. 11, 19410 HOFGAARD 2,262,235

ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet l8 FIG.38

INVENTOR Rolf Hnfgnard His ATTORNEY Nov. 11, 1941. R, HQFGAARD 2,262,235

ELECTRIC CALCULAT ING MACHINE Filed July 21, 1938 92 Sheets-Sheet l9 FIG.42

IN VEN TO R Roll Hofgaard g g, M

His ATTORNEY Nov. 11, 1941. R. HOFGAARD ELECTRIC CALCULATING MACHINE Filed July 21, 1938 92 Sheets-Sheet 2O INVENTOR Rolf Hofgaard Y His ATTORNEY 

